From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ville =?iso-8859-1?Q?Syrj=E4l=E4?= <ville.syrjala@linux.intel.com>
Subject: Re: [PATCH 2/2] drm: Peek at the current counter/timestamp for
 vblank queries
Date: Fri, 17 Mar 2017 11:49:32 +0200
Message-ID: <20170317094932.GM31595@intel.com>
References: <20170316234749.1297-1-chris@chris-wilson.co.uk>
 <20170316234749.1297-2-chris@chris-wilson.co.uk>
Mime-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: base64
Return-path: <dri-devel-bounces@lists.freedesktop.org>
Content-Disposition: inline
In-Reply-To: <20170316234749.1297-2-chris@chris-wilson.co.uk>
List-Unsubscribe: <https://lists.freedesktop.org/mailman/options/dri-devel>,
 <mailto:dri-devel-request@lists.freedesktop.org?subject=unsubscribe>
List-Archive: <https://lists.freedesktop.org/archives/dri-devel>
List-Post: <mailto:dri-devel@lists.freedesktop.org>
List-Help: <mailto:dri-devel-request@lists.freedesktop.org?subject=help>
List-Subscribe: <https://lists.freedesktop.org/mailman/listinfo/dri-devel>,
 <mailto:dri-devel-request@lists.freedesktop.org?subject=subscribe>
Errors-To: dri-devel-bounces@lists.freedesktop.org
Sender: "dri-devel" <dri-devel-bounces@lists.freedesktop.org>
To: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Michel =?iso-8859-1?Q?D=E4nzer?= <michel@daenzer.net>, dri-devel@lists.freedesktop.org, Laurent Pinchart <laurent.pinchart@ideasonboard.com>, Dave Airlie <airlied@redhat.com>, intel-gfx@lists.freedesktop.org
List-Id: dri-devel@lists.freedesktop.org

T24gVGh1LCBNYXIgMTYsIDIwMTcgYXQgMTE6NDc6NDlQTSArMDAwMCwgQ2hyaXMgV2lsc29uIHdy
b3RlOgo+IEJ5cGFzcyBhbGwgdGhlIHNwaW5sb2NrcyBhbmQgcmV0dXJuIHRoZSBsYXN0IHRpbWVz
dGFtcCBhbmQgY291bnRlciBmcm9tCj4gdGhlIGxhc3QgdmJsYW5rIGlmIHRoZSBkcml2ZXIgZGVs
Y2FyZXMgdGhhdCBpdCBpcyBhY2N1cmF0ZSAoYW5kIHN0YWJsZQo+IGFjcm9zcyBvbi9vZmYpLCBh
bmQgdGhlIHZibGFuayBpcyBjdXJyZW50bHkgZW5hYmxlZC4KPiAKPiBUaGlzIGlzIGRlcGVuZGVu
dCB1cG9uIHRoZSBib3RoIHRoZSBoYXJkd2FyZSBhbmQgZHJpdmVyIHRvIHByb3ZpZGUgdGhlCj4g
cHJvcGVyIGJhcnJpZXJzIHRvIGZhY2lsaXRhdGUgcmVhZGluZyBvdXIgYm9va2tlZXBpbmcgb3V0
c2lkZSBvZiB0aGUKPiB2YmxhbmsgaW50ZXJydXB0IGFuZCBvdXRzaWRlIG9mIHRoZSBleHBsaWNp
dCB2YmxhbmsgbG9ja3MuCj4gCj4gU2lnbmVkLW9mZi1ieTogQ2hyaXMgV2lsc29uIDxjaHJpc0Bj
aHJpcy13aWxzb24uY28udWs+Cj4gQ2M6IFZpbGxlIFN5cmrDpGzDpCA8dmlsbGUuc3lyamFsYUBs
aW51eC5pbnRlbC5jb20+Cj4gQ2M6IERhbmllbCBWZXR0ZXIgPGRhbmllbEBmZndsbC5jaD4KPiBD
YzogTWljaGVsIETDpG56ZXIgPG1pY2hlbEBkYWVuemVyLm5ldD4KPiBDYzogTGF1cmVudCBQaW5j
aGFydCA8bGF1cmVudC5waW5jaGFydEBpZGVhc29uYm9hcmQuY29tPgo+IENjOiBEYXZlIEFpcmxp
ZSA8YWlybGllZEByZWRoYXQuY29tPiwKPiBDYzogTWFyaW8gS2xlaW5lciA8bWFyaW8ua2xlaW5l
ci5kZUBnbWFpbC5jb20+Cj4gLS0tCj4gIGRyaXZlcnMvZ3B1L2RybS9kcm1faXJxLmMgfCAyNiAr
KysrKysrKysrKysrKysrKysrKysrKysrKwo+ICAxIGZpbGUgY2hhbmdlZCwgMjYgaW5zZXJ0aW9u
cygrKQo+IAo+IGRpZmYgLS1naXQgYS9kcml2ZXJzL2dwdS9kcm0vZHJtX2lycS5jIGIvZHJpdmVy
cy9ncHUvZHJtL2RybV9pcnEuYwo+IGluZGV4IDRjYzkzNTJhYjZhOC4uYjRiZDM2MWEyYmNjIDEw
MDY0NAo+IC0tLSBhL2RyaXZlcnMvZ3B1L2RybS9kcm1faXJxLmMKPiArKysgYi9kcml2ZXJzL2dw
dS9kcm0vZHJtX2lycS5jCj4gQEAgLTE1NjIsNiArMTU2MiwxNyBAQCBzdGF0aWMgaW50IGRybV9x
dWV1ZV92YmxhbmtfZXZlbnQoc3RydWN0IGRybV9kZXZpY2UgKmRldiwgdW5zaWduZWQgaW50IHBp
cGUsCj4gIAlyZXR1cm4gcmV0Owo+ICB9Cj4gIAo+ICtzdGF0aWMgYm9vbCBkcm1fd2FpdF92Ymxh
bmtfaXNfcXVlcnkodW5pb24gZHJtX3dhaXRfdmJsYW5rICp2Ymx3YWl0KQo+ICt7Cj4gKwlpZiAo
dmJsd2FpdC0+cmVxdWVzdC5zZXF1ZW5jZSkKPiArCQlyZXR1cm4gZmFsc2U7Cj4gKwo+ICsJcmV0
dXJuIF9EUk1fVkJMQU5LX1JFTEFUSVZFID09Cj4gKwkJKHZibHdhaXQtPnJlcXVlc3QudHlwZSAm
IChfRFJNX1ZCTEFOS19UWVBFU19NQVNLIHwKPiArCQkJCQkgIF9EUk1fVkJMQU5LX0VWRU5UIHwK
PiArCQkJCQkgIF9EUk1fVkJMQU5LX05FWFRPTk1JU1MpKTsKPiArfQo+ICsKPiAgLyoKPiAgICog
V2FpdCBmb3IgVkJMQU5LLgo+ICAgKgo+IEBAIC0xNjExLDYgKzE2MjIsMjEgQEAgaW50IGRybV93
YWl0X3ZibGFuayhzdHJ1Y3QgZHJtX2RldmljZSAqZGV2LCB2b2lkICpkYXRhLAo+ICAKPiAgCXZi
bGFuayA9ICZkZXYtPnZibGFua1twaXBlXTsKPiAgCj4gKwkvKiBJZiB0aGUgY291bnRlciBpcyBj
dXJyZW50bHkgZW5hYmxlZCBhbmQgYWNjdXJhdGUsIHNob3J0LWNpcmN1aXQgcXVlcmllcwo+ICsJ
ICogdG8gcmV0dXJuIHRoZSBjYWNoZWQgdGltZXN0YW1wIG9mIHRoZSBsYXN0IHZibGFuay4KPiAr
CSAqLwo+ICsJaWYgKGRldi0+dmJsYW5rX2Rpc2FibGVfaW1tZWRpYXRlICYmCj4gKwkgICAgZHJt
X3dhaXRfdmJsYW5rX2lzX3F1ZXJ5KHZibHdhaXQpICYmCj4gKwkgICAgdmJsYW5rLT5lbmFibGVk
KSB7Cj4gKwkJc3RydWN0IHRpbWV2YWwgbm93Owo+ICsKCkRvIHdlIHdhbnQgYSBjb21tZW50IGhl
cmUgYXMgd2VsbCBzdGF0aW5nIHRoYXQgdGhlIHNlcWxvY2sKYWxyZWFkeSBoYXMgdGhlIHJtYj8K
Cj4gKwkJdmJsd2FpdC0+cmVwbHkuc2VxdWVuY2UgPQo+ICsJCQlkcm1fdmJsYW5rX2NvdW50X2Fu
ZF90aW1lKGRldiwgcGlwZSwgJm5vdyk7Cj4gKwkJdmJsd2FpdC0+cmVwbHkudHZhbF9zZWMgPSBu
b3cudHZfc2VjOwo+ICsJCXZibHdhaXQtPnJlcGx5LnR2YWxfdXNlYyA9IG5vdy50dl91c2VjOwo+
ICsJCXJldHVybiAwOwo+ICsJfQo+ICsKPiAgCXJldCA9IGRybV92YmxhbmtfZ2V0KGRldiwgcGlw
ZSk7Cj4gIAlpZiAocmV0KSB7Cj4gIAkJRFJNX0RFQlVHKCJjcnRjICVkIGZhaWxlZCB0byBhY3F1
aXJlIHZibGFuayBjb3VudGVyLCAlZFxuIiwgcGlwZSwgcmV0KTsKPiAtLSAKPiAyLjExLjAKCi0t
IApWaWxsZSBTeXJqw6Rsw6QKSW50ZWwgT1RDCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19f
X19fX19fX19fX19fX19fX19fCmRyaS1kZXZlbCBtYWlsaW5nIGxpc3QKZHJpLWRldmVsQGxpc3Rz
LmZyZWVkZXNrdG9wLm9yZwpodHRwczovL2xpc3RzLmZyZWVkZXNrdG9wLm9yZy9tYWlsbWFuL2xp
c3RpbmZvL2RyaS1kZXZlbAo=